Hydrogen Cup Negative Hydrogen Water Cup Water Water Cup Double-layer Health Preserving Glass Cup 350ML Features: Hydrogen water cup: This product can prepare hydrogen water, providing users with a hydrogen water drinking experience, which helps improve physical health. Negative technology: This product adopts negative technology, which can release negative , improve indoor quality, and purify the . Double layer : This product adopts a double-layer, with the inner layer being a glass cup that can effectively insulate, and the outer layer being a protective layer to avoid burns and the inner glass. Health and wellness: This product can provide users with a water experience of health and wellness. Hydrogen water and negative help improve the body's immune system and promote metabolism. Portable: This product has the characteristic of portability, making it convenient for users to drink hydrogen water anytime and anywhere, meeting their water needs. Product Description: Material: Glass Size: 25x6.5x6.5cm Package list: 1x cup lid, 1x cup body, 1x cup bottom, 1x charging cable Note: Due to manual measurement, please allow for slight errors. Thank you for your understanding. The calibration of the monitor may vary, and the colors of the items displayed in the photos may slightly differ from the actual ones. Please take the truth as the standard.